denks @kgallen and @Davidmk for taking the time to answer.
Just to complete if anyone is interessted;
to get different fade in times for different lamps i did following (with the exemple my post above):
Programming channels 1 thru 6 with fade time 10sec on MasterPlayback.
Programming an empty cue on PB1 and a second cue with channel 7 and 8 with fade-time 3sec.
with the cue on MasterPlayback it auto-trigger a macro (recoded as -go PB1-)
befor i trigger the cue on MasterPlayback, raised the Fader on PB1 manually so the empty cue is active.
(did this even befor the show started, so i didn't had to worried about anymore)
easy.
good evening